The following papers discuss assigning statistic based scores for user authenticated data D. Freeman, S. Jain, M. Dürmuth, B. Biggio, and G. Giacinto, “Who Are You? A Statistical Approach to Measuring User Authenticity.,” in NDSS, 2016, vol. 16, pp. 21–24. V. Unsel, S. Wiefling, N. Gruschka, and L. Lo Iacono, “Risk-Based Authentication for OpenStack: A Fully Functional Implementation and Guiding Example,” in Proceedings of the Thirteenth ACM Conference on Data and Application Security and Privacy, 2023, pp. 237–243.